* ESP @ 1996-12-09 0:00 Ken Garlington 1996-12-14 0:00 ` ESP Richard Riehle ` (2 more replies) 0 siblings, 3 replies; 7+ messages in thread From: Ken Garlington @ 1996-12-09 0:00 UTC (permalink / raw) Just got the December issue of Embedded Systems Programming. The feature article this month is a Richard Riehle article on Ada. I liked the article very much, but I have to ask: * Who's this PL/I programmer discussed in the article? * Did there _have_ to be a statement on how Ada was inappropriate for 8-bit controllers? That pretty much killed any desire on my part to try to build one. * Why can "Ada" be spelled correctly everywhere but on the front cover, where it's spelled "ADA"? It's not there now, but eventually the article should be at http://www.embedded.com, where back issues of ESP are kept. -- LMTAS - The Fighter Enterprise - "Our Brand Means Quality" See http://www.lmtas.com for more information (job listings now available) ^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: ESP 1996-12-09 0:00 ESP Ken Garlington @ 1996-12-14 0:00 ` Richard Riehle 1996-12-15 0:00 ` ESP Eric Miller 1996-12-15 0:00 ` ESP Larry Kilgallen 1996-12-17 0:00 ` ESP Ken Garlington 1996-12-17 0:00 ` ESP Robert I. Eachus 2 siblings, 2 replies; 7+ messages in thread From: Richard Riehle @ 1996-12-14 0:00 UTC (permalink / raw) To: Ken Garlington Since I am the culprit who wrote the article, I suppose it is my responsibility to respond. On Mon, 9 Dec 1996, Ken Garlington wrote: > Just got the December issue of Embedded Systems Programming. The > feature article this month is a Richard Riehle article on Ada. > I liked the article very much, but I have to ask: Glad you enjoye most of the article, Ken. I have been getting pretty good email from readers, including non-DoD readers who are interested in looking in to Ada. > * Who's this PL/I programmer discussed in the article? You may recall that there was a contibutor to the thread on the Ariane incident who kept insisting that everything would have been just fine if the software had been programmed in PL/I instead of Ada. And in those PL/I posts that contibutor made recurring references to audit trails and printed reports. As you and I know, embedded space systems rarely have any attached printers. > * Did there _have_ to be a statement on how Ada was inappropriate > for 8-bit controllers? That pretty much killed any desire on > my part to try to build one. I specifically mentioned the 8051 8-bit microcontroller. My comments should not be construed to mean that no eight-bit microcontroller is appropriate for Ada. And I hope to be proven wrong by my belief that the 8051 is inappropriate for Ada. If I am wrong, it will be more to my delight than to my dismay. When I first agreed to do the article, I also agreed to indicate where I thought Ada was unsuited as a language as well as well as where it was well-suited. The article is weighted far more heavily on the virtues of Ada than on its liabilities. I hope this one small paragraph does not suggest abrogation of the use of Ada in those many applications where it is undeniably the best choice. I welcome Ada enthusiasts to prove me wrong on the 8051, and will publish an article on the Ada 8051 compiler as soon as it is ready. > * Why can "Ada" be spelled correctly everywhere but on the front > cover, where it's spelled "ADA"? Sigh. I too was somewhat disappointed at the way it appeared on the cover. I wrote the text and approved the typset version of the article. The cover was designed by an artist. Artists like to see the symmetry of their work. If ESP accepts another article for next year's Tri-Ada issue, I will remind them of the spelling format customarily used for Ada. > It's not there now, but eventually the article should be at > http://www.embedded.com, where back issues of ESP are kept. Yes, I believe it will be added eventually. Thanks for your comments, Ken. I do try to write these articles so they will be informative and useful. Sometimes I fall short of my own expectations -- disappoint myself -- but I am trying to do my part to enlighten the not-yet-Ada-aware software community regarding some of Ada's benefits. Richard Riehle richard@adaworks.com AdaWorks Software Engineering 2555 Park Boulevard Suite 30 Palo Alto, CA 94306 (415) 328-1815 FAX 328-1112 ^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: ESP 1996-12-14 0:00 ` ESP Richard Riehle @ 1996-12-15 0:00 ` Eric Miller 1996-12-15 0:00 ` ESP Larry Kilgallen 1 sibling, 0 replies; 7+ messages in thread From: Eric Miller @ 1996-12-15 0:00 UTC (permalink / raw) Richard Riehle wrote: > > It's not there now, but eventually the article should be at > > http://www.embedded.com, where back issues of ESP are kept. > > Yes, I believe it will be added eventually. It's there: <http://www.embedded.com/feat1296.htm> ^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: ESP 1996-12-14 0:00 ` ESP Richard Riehle 1996-12-15 0:00 ` ESP Eric Miller @ 1996-12-15 0:00 ` Larry Kilgallen 1996-12-17 0:00 ` ESP Andrew Lynch 1 sibling, 1 reply; 7+ messages in thread From: Larry Kilgallen @ 1996-12-15 0:00 UTC (permalink / raw) In article <Pine.GSO.3.95.961214131401.15507A-100000@nunic.nu.edu>, Richard Riehle <rriehle@nunic.nu.edu> writes: > You may recall that there was a contibutor to the thread on the > Ariane incident who kept insisting that everything would have been > just fine if the software had been programmed in PL/I instead of > Ada. And in those PL/I posts that contibutor made recurring > references to audit trails and printed reports. As you and I know, > embedded space systems rarely have any attached printers. If someone had included a printer on the Ariane :-), would it have been intact after the incident ? Larry Kilgallen ^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: ESP 1996-12-15 0:00 ` ESP Larry Kilgallen @ 1996-12-17 0:00 ` Andrew Lynch 0 siblings, 0 replies; 7+ messages in thread From: Andrew Lynch @ 1996-12-17 0:00 UTC (permalink / raw) Larry Kilgallen wrote: > In article <Pine.GSO.3.95.961214131401.15507A-100000@nunic.nu.edu>, Richard Riehle <rriehle@nunic.nu.edu> writes: > > As you and I know, > > embedded space systems rarely have any attached printers. > > If someone had included a printer on the Ariane :-), > would it have been intact after the incident ? My mind is making up weird images of trails of fanfold paper floating in the sky... Andrew. ^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: ESP 1996-12-09 0:00 ESP Ken Garlington 1996-12-14 0:00 ` ESP Richard Riehle @ 1996-12-17 0:00 ` Ken Garlington 1996-12-17 0:00 ` ESP Robert I. Eachus 2 siblings, 0 replies; 7+ messages in thread From: Ken Garlington @ 1996-12-17 0:00 UTC (permalink / raw) Robert I. Eachus wrote: > > In article <1996Dec14.191445.1@eisner> kilgallen@eisner.decus.org (Larry Kilgallen) writes: > > > If someone had included a printer on the Ariane :-), > > would it have been intact after the incident ? > > The right question is "Would they have still sent the data down the > bus to the engine controller?" > > Remember that the final nail in the coffin was that the telemetry > data was sent over the same bus as the commands to the point the > engines, and that this is what actually caused the rocket to go out of > control. Well, sorta... if both INUs had just turned off their remote terminals, for example, I don't know if the flight control would have had a backup attitude source. It still might have crashed. to maintain control. > > -- > > Robert I. Eachus > > with Standard_Disclaimer; > use Standard_Disclaimer; > function Message (Text: in Clever_Ideas) return Better_Ideas is... -- LMTAS - The Fighter Enterprise - "Our Brand Means Quality" For job listings, other info: http://www.lmtas.com or http://www.lmco.com ^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: ESP 1996-12-09 0:00 ESP Ken Garlington 1996-12-14 0:00 ` ESP Richard Riehle 1996-12-17 0:00 ` ESP Ken Garlington @ 1996-12-17 0:00 ` Robert I. Eachus 2 siblings, 0 replies; 7+ messages in thread From: Robert I. Eachus @ 1996-12-17 0:00 UTC (permalink / raw) In article <1996Dec14.191445.1@eisner> kilgallen@eisner.decus.org (Larry Kilgallen) writes: > If someone had included a printer on the Ariane :-), > would it have been intact after the incident ? The right question is "Would they have still sent the data down the bus to the engine controller?" Remember that the final nail in the coffin was that the telemetry data was sent over the same bus as the commands to the point the engines, and that this is what actually caused the rocket to go out of control. -- Robert I. Eachus with Standard_Disclaimer; use Standard_Disclaimer; function Message (Text: in Clever_Ideas) return Better_Ideas is... ^ permalink raw reply [flat|nested] 7+ messages in thread
end of thread, other threads:[~1996-12-17 0:00 UTC | newest] Thread overview: 7+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 1996-12-09 0:00 ESP Ken Garlington 1996-12-14 0:00 ` ESP Richard Riehle 1996-12-15 0:00 ` ESP Eric Miller 1996-12-15 0:00 ` ESP Larry Kilgallen 1996-12-17 0:00 ` ESP Andrew Lynch 1996-12-17 0:00 ` ESP Ken Garlington 1996-12-17 0:00 ` ESP Robert I. Eachus
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